Fume utilizer



March 24, 19.25.

m A. v. CHAPIN FUME UTILIZER Filed July 21, 1925 illl 4 Ill ill PatentedMar. 24, 1925.

ALFRED V. CHAPIN, F ALLEN, KANSAS.

IEUME UTILIZER.

Application filed July 21 1923. Serial No. 652,991.

To all whom if may concern:

Be it known that I, ALFRED V. CHAPIN, citizen of the United States,residing at Al-v len, in the county of Lyon and State of Kansas, haveinvented certain new and useful Improvements in Fume Utilizers, of whichthe following specification.

This invention relates to a fume utilizer for internal combustionengines and it has for its object to provide an improved construction bymeans of which the usual carbuieters used in internal combustion enginesmay be dispensed with, the spraying of gasoline into a column of air maybe eliminated and the engine may be operated upon a car buretted vapordrawn main gasoline tank, whereby more efficient action and completecombustion 'of the charge is had. 20 Further objects and advantages ofthe in vention will be set forth in the detail description .whichfollows.

In the accompanying drawing:

Fig. 1 is a diagrammatic view illustrating the application of theinvention;

ig. 2 is a sectional view illustrating a fluid check for preventing backfiring of the engine into the gasoline tank; and

Fig. 3 is a sectional view of a mixing and safety valve hereinafterdescribed.

Like numerals designate corresponding parts in all of the figures of thedrawing.

In the drawing 5 designates the intake manifold of an internalcombustion engine, 6 the gasoline tank and 7 the radiator of anautomobile. I prefer to water-jacket the gasoline tank, as indicated at8, and to lead cir culatin'g pipes 9 and 10 into and from thewaterqacket from the radiator so that the contents of the gasoline tankmay be heated to cause them to readily vaporize and at the same time dothis by means of a heating elementwhich will present no danger ofexplosion or fire. An air pipe 11 leads into the gasoline tank andterminates adjacent the bottom thereof and air drawn through this pipeunder the suction in the intake manifold 5 passes upwardly throughthe-body of the liquid fuel, gasoline for instance, in the tank andreaches dome 6? at the upper part of the tank in the form of acarburetted vapor. A baflie head 12 on the end of a feed pipe 13prevents the gasoline from splashing into the feed pipe and permits thevapor to be drawn into the feed pipe by the suction in the manifolddirectly from the 5. A check valve 14 may be disposed in the pipe 13 andcloses toward the tank 6 so that in the event of a back fire in theintake manifold 5 this check valve will close and prevent the back firefrom finding its way into the gasoline tank. However, in Fig. 3 I haveshown an alternative construction to be used in lieu of the check valve.In this case a section 13 of the feed pipe leads into a tank 14.containing a body of non-inflammable liquid 15 and a second section 13of the feed pipe leads out of the upper part of this tank. Thus thecarburetted air from the tank 6 must pass through the body of liquid inorder to continue its 70 travel toward the intake manifold through pipe13 and in the event of a back fire this body of liquid 15 acts as a'check to prevent the flaming gases from reaching the gasoline tank. Amixing valve 16 is disposed in the length of the feed pipe 13 andcomprises an air inlet port 17 the extent of opening of which iscontrolled by the adjustment of a screw 18, the latter being adjustablefrom the dash 19 of a motor vehicle by r0d.19 and lock nut 19*. Thus theextent to which the current of carburetted vapor passing through ,pipe13 may be diluted by air through port 13 may be controlled and a mixtureof just the right degree of richness may be secured. A throttle valve isindicated at 20. A relief valve is indicated at 21 and in the event of aback fire this relief valve opens and permits the escape of the productsof combustion but closes under the influence of spring 22 when theengine is operating in a normal manner and a suction exists in the line13. A valve 23 disposed in the pipe 9 provides means forcontrolling theextent of the heating of the gasoline tank 6 by the circulating water ofthe engine.

I prefer to make the gasoline tank square in cross section so that a.uniform area of surface will be exposed at the gasolinelevelirreijpective of the amount of gasoline in the tan It is to beunderstood that the invention is not limited to the precise constructionset forth but that it includes within its purview whatever changesfairly come within either. 105 the terms or the spirit of the appendedclaim.

Having described my invention whaitJ claim is: I

The combination with an internal combus tion engine, its cooling systemand its gaso- 110 line tank, of a water-jacket about the gasocarrying athrottle valve, and air inlet valve line tank, connections between saidwaterand a relief valve. jacket and the cooling system of the engine, Intestimony whereof I affix my signature an air supply leading into thegasoline tank in the presence of two witnesses.

J and terminating adjacent the bottom there- ALFRED V. CHAPIN.

. of, a feed line leading from the upper part Witnesses:

of the gasoline tank to the intake manifold B. J. BOYLE, of the engineand a fitting in said feed line 0. C. CHAPIN.

